Objective:To investigate the range of normal value of total nasal cavity volume(NV)and total na-sopharyngeal cavity volume (NPV)of healthy adults. Method: Six hundred and fifty-nine healthy adults andeighty-two adults of chronic rhinitis were measured with acoustic rhinometry. Result:The range of NV was29. 922～37. 481 cm3 and NPV was 29. 369～44. 159 cm3. Comparing healthy adults with adults of chronic rhini-tis,there was a significant difference in NV. Conclusion:Acoustic rhinometry suited for objective assessment ofthe nasal airways in adults. It was demonstrated that these data could provide available information for the studyof nasal physiology and pathophysiology,as well as for the diagnosis and judgement of therapeutic effectiveness ofnasal diseases.

Mutual information can measure arbitrary statistical dependencies. It has been applied to many kinds of fields widely. But when mutual information is used as the correlation measure, the features with more values are apt to be chosen. To solve this problem, a novel definition of correlation degree is proposed in this paper. It can avoid the shortcoming of selecting more value features when mutual information acted as the measure, and it can avoid the shortcoming of selecting less value features when correlation degree coefficients acted as the measure. In the method using the novel definition, the number of selected features is determined by the correct classification rate of Support Vector Machine. At last, the efficiency of the method is illustrated through analyzing the symptoms combination of seven essential elements of the syndrome corresponding to stroke.
Computing Methodologies ; Data Interpretation, Statistical ; Diagnosis, Differential ; Humans ; Medicine, Chinese Traditional ; methods ; standards ; Models, Statistical ; Stroke ; diagnosis

OBJECTIVE: To observe the feasibility and effect of improved standard facial translocation approach in treating anterior-lateral benign tumor in middle cranial fossa base. METHOD: We excised 10 cases of benign tumor originating from pharynx nasals of pterygopalatine fossa and expanding toward the cavernous sinus of middle cranial fossa, infratemporal fossa or pterygo-maxillary space. We ameliorated, facial incision, maxilla disassembled, reestablishment, fixation,maxillary mucosal option and remained lateral wall of nasal cavity to some extent. RESULT: The mean time of following-up was 38 month postoperatively without complications of bleeding, infection and necrosis or prolapse of displacing bones. Nine patients were treated successfully, one died. CONCLUSION Reforming facial translocation approach in treating anterior-lateral benign tumor in middle cranial fossa base was safe and obtained ideal curative effect in near future.
Adolescent ; Adult ; Aged ; Cranial Fossa, Middle ; pathology ; surgery ; Craniotomy ; methods ; Female ; Humans ; Male ; Middle Aged ; Skull Base Neoplasms ; pathology ; surgery ; Treatment Outcome ; Young Adult